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Diffstat (limited to 'include/boost/dll/detail/posix/shared_library_impl.hpp')
| -rw-r--r-- | include/boost/dll/detail/posix/shared_library_impl.hpp | 197 |
1 files changed, 0 insertions, 197 deletions
diff --git a/include/boost/dll/detail/posix/shared_library_impl.hpp b/include/boost/dll/detail/posix/shared_library_impl.hpp deleted file mode 100644 index 8df0ca5c..00000000 --- a/include/boost/dll/detail/posix/shared_library_impl.hpp +++ /dev/null @@ -1,197 +0,0 @@ -// Copyright 2014 Renato Tegon Forti, Antony Polukhin. -// Copyright 2015 Antony Polukhin. -// -// Distributed under the Boost Software License, Version 1.0. -// (See accompanying file LICENSE_1_0.txt -// or copy at http://www.boost.org/LICENSE_1_0.txt) - -#ifndef BOOST_DLL_SHARED_LIBRARY_IMPL_HPP -#define BOOST_DLL_SHARED_LIBRARY_IMPL_HPP - -#include <boost/config.hpp> -#include <boost/dll/shared_library_load_mode.hpp> -#include <boost/dll/detail/posix/path_from_handle.hpp> -#include <boost/dll/detail/posix/program_location_impl.hpp> - -//#include <boost/move/utility.hpp> -#include <boost/swap.hpp> -#include <boost/filesystem/path.hpp> -#include <boost/filesystem/operations.hpp> -#include <boost/predef/os.h> - -#include <dlfcn.h> -#include <cstring> // strncmp -#if !BOOST_OS_MACOS && !BOOST_OS_IOS && !BOOST_OS_QNX -# include <link.h> -#elif BOOST_OS_QNX -// QNX's copy of <elf.h> and <link.h> reside in sys folder -# include <sys/link.h> -#endif - -#ifdef BOOST_HAS_PRAGMA_ONCE -# pragma once -#endif - -namespace boost { namespace dll { namespace detail { - -class shared_library_impl { - - BOOST_MOVABLE_BUT_NOT_COPYABLE(shared_library_impl) - -public: - typedef void* native_handle_t; - - shared_library_impl() BOOST_NOEXCEPT - : handle_(NULL) - {} - - ~shared_library_impl() BOOST_NOEXCEPT { - unload(); - } - - shared_library_impl(BOOST_RV_REF(shared_library_impl) sl) BOOST_NOEXCEPT - : handle_(sl.handle_) - { - sl.handle_ = NULL; - } - - shared_library_impl & operator=(BOOST_RV_REF(shared_library_impl) sl) BOOST_NOEXCEPT { - handle_ = sl.handle_; - sl.handle_ = NULL; - return *this; - } - - void load(const boost::filesystem::path &sl, load_mode::type mode, boost::system::error_code &ec) { - typedef int native_mode_t; - unload(); - - // Do not allow opening NULL paths. User must use program_location() instead - if (sl.empty()) { - ec = boost::system::error_code( - boost::system::errc::bad_file_descriptor, - boost::system::generic_category() - ); - - return; - } - - // Fixing modes - if (!(mode & load_mode::rtld_now)) { - mode |= load_mode::rtld_lazy; - } - - if (!(mode & load_mode::rtld_global)) { - mode |= load_mode::rtld_local; - } - - // Trying to open with appended decorations - if (!!(mode & load_mode::append_decorations)) { - mode = static_cast<load_mode::type>( - static_cast<native_mode_t>(mode) & (~static_cast<native_mode_t>(load_mode::append_decorations)) - ); - - boost::filesystem::path actual_path = ( - std::strncmp(sl.filename().string().c_str(), "lib", 3) - ? (sl.parent_path() / "lib").native() + sl.filename().native() - : sl - ); - actual_path += suffix(); - - handle_ = dlopen(actual_path.c_str(), static_cast<native_mode_t>(mode)); - if (handle_) { - return; - } - } - - // Opening by exactly specified path - handle_ = dlopen(sl.c_str(), static_cast<native_mode_t>(mode)); - if (handle_) { - return; - } - - ec = boost::system::error_code( - boost::system::errc::bad_file_descriptor, - boost::system::generic_category() - ); - - // Maybe user wanted to load the executable itself? Checking... - // We assume that usually user wants to load a dynamic library not the executable itself, that's why - // we try this only after traditional load fails. - boost::system::error_code prog_loc_err; - boost::filesystem::path loc = boost::dll::detail::program_location_impl(prog_loc_err); - if (!prog_loc_err && boost::filesystem::equivalent(sl, loc, prog_loc_err) && !prog_loc_err) { - // As is known the function dlopen() loads the dynamic library file - // named by the null-terminated string filename and returns an opaque - // "handle" for the dynamic library. If filename is NULL, then the - // returned handle is for the main program. - ec.clear(); - handle_ = dlopen(NULL, static_cast<native_mode_t>(mode)); - if (!handle_) { - ec = boost::system::error_code( - boost::system::errc::bad_file_descriptor, - boost::system::generic_category() - ); - } - } - } - - bool is_loaded() const BOOST_NOEXCEPT { - return (handle_ != 0); - } - - void unload() BOOST_NOEXCEPT { - if (!is_loaded()) { - return; - } - - dlclose(handle_); - handle_ = 0; - } - - void swap(shared_library_impl& rhs) BOOST_NOEXCEPT { - boost::swap(handle_, rhs.handle_); - } - - boost::filesystem::path full_module_path(boost::system::error_code &ec) const { - return boost::dll::detail::path_from_handle(handle_, ec); - } - - static boost::filesystem::path suffix() { - // https://sourceforge.net/p/predef/wiki/OperatingSystems/ -#if BOOST_OS_MACOS || BOOST_OS_IOS - return ".dylib"; -#else - return ".so"; -#endif - } - - void* symbol_addr(const char* sb, boost::system::error_code &ec) const BOOST_NOEXCEPT { - // dlsym - obtain the address of a symbol from a dlopen object - void* const symbol = dlsym(handle_, sb); - if (symbol == NULL) { - ec = boost::system::error_code( - boost::system::errc::invalid_seek, - boost::system::generic_category() - ); - } - - // If handle does not refer to a valid object opened by dlopen(), - // or if the named symbol cannot be found within any of the objects - // associated with handle, dlsym() shall return NULL. - // More detailed diagnostic information shall be available through dlerror(). - - return symbol; - } - - native_handle_t native() const BOOST_NOEXCEPT { - return handle_; - } - -private: - native_handle_t handle_; -}; - -}}} // boost::dll::detail - -#endif // BOOST_DLL_SHARED_LIBRARY_IMPL_HPP - |